tu a to ide tu
tu a to ide tu .
t̪̻ u WORD_BOUNDARY ä WORD_BOUNDARY t̪̻ o̞ WORD_BOUNDARY i d̪̻ e̞ WORD_BOUNDARY t̪̻ u WORD_BOUNDARY
t u WORD_BOUNDARY a WORD_BOUNDARY t o WORD_BOUNDARY i d e WORD_BOUNDARY t u WORD_BOUNDARY . WORD_BOUNDARY